package thread;

import java.util.Scanner;

public class SleepDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了");
        Scanner s = new Scanner(System.in);
        System.out.println("请输入倒计时时间");
        for (int i = s.nextInt(); i > 0 ; i--) {
            System.out.println(i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("程序结束了");
    }
}
